Volcano earthquake report for Friday, 23 Apr 2021

Fri, 23 Apr 2021, 23:50
23:50 PM | BY: EARTHQUAKEMONITOR
World map showing volcanoes with shallow (less than 20 km) earthquakes within 20 km radius  during the past 24 hours on 23 Apr 2021 Number in brackets indicate nr of quakes.
World map showing volcanoes with shallow (less than 20 km) earthquakes within 20 km radius during the past 24 hours on 23 Apr 2021 Number in brackets indicate nr of quakes.
Quakes detected near: Bratan (1 quake mag 1.2), Brennisteinsfjöll (8 quakes between mag 0.1-1.7), Cabalian (3 quakes between mag 2.3-3.8), Clear Lake (28 quakes between mag 0.4-2.3), Denison (2 quakes between mag 0.5-2.1), Fagradalsfjall (8 quakes between mag 0.1-1.8)
Great Sitkin (6 quakes between mag 0.2-2.6), Gunung Semuning (Ranau caldera) (1 quake mag 1.6), Hrómundartindur (4 quakes between mag 0.3-2.0), Kilauea (1 quake mag 2.1), Krísuvík (13 quakes between mag 0.2-1.4), Long Valley (4 quakes between mag 0.3-2.1), Maunaloa (2 quakes between mag 1.2-1.5), Monte Albano (1 quake mag 1.2), Mount Rainier (1 quake mag 1.4), Nisyros (21 quakes between mag 1.7-3.6), Okataina (Tarawera) (1 quake mag 1.8), Penguin Island (1 quake mag 4.3), Reykjanes (4 quakes between mag 0.7-1.6), Sabancaya (1 quake mag 3.7), Salton Buttes (1 quake mag 1.4), Ubehebe Craters (1 quake mag 1.5) (updated 23h50)

Note: Earthquakes within 20 km from and at depths less than 20 km under active volcanoes are reported. The list is not complete because many volcanoes are not monitored and/or seismic data in high resolution is not available publicly.

Volcanoes with recent earthquakes above magnitude 2 or more than 10 quakes are listed below:




Cabalian volcano (Central Philippines): 3 earthquakes up to magnitude 3.8

3 earthquakes occurred near (under) the volcano during 7 hours, the last being recorded quake 10 hours ago. Hypocenter depths ranged between 14.0 and 2.0 km.
Earthquake details:
3.8 quake Southern Leyte, 33 km south of Abuyog, Philippines, 23 April 2021 - 03:04 PM (PST) (15 km NW)
3.6 quake 41 km northeast of Maasin, Southern Leyte, Eastern Visayas, Philippines, 23 April 2021 13:38 GMT (17 km NW)
2.3 quake 18 km east of Sogod, Southern Leyte, Eastern Visayas, Philippines, 23 April 2021 - 06:11 PM (PST) (11 km WNW)
All earthquakes at Cabalian

Clear Lake volcano (California): 28 earthquakes up to magnitude 2.3

Possible earthquake swarm: 28 earthquakes occurred near (under) the volcano during 22 hours, the last being recorded quake 1 hour 4 minutes ago. Hypocenter depths ranged between 6.3 and 1.1 km.
Earthquake details: (only 5 largest)
2.3 quake 7km WNW of Cobb, CA, USA, 23 April 2021 00:43 GMT (15 km S)
1.8 quake 7km NW of The Geysers, CA, USA, 23 April 2021 12:44 GMT (16 km S)
1.8 quake 6km NW of The Geysers, CA, USA, 23 April 2021 17:11 GMT (16 km S)
1.6 quake 6km WNW of The Geysers, CA, USA, 23 April 2021 16:26 GMT (18 km SSW)
1.5 quake 7km WNW of The Geysers, CA, USA, 23 April 2021 06:43 GMT (18 km SSW)
All earthquakes at Clear Lake

Denison volcano (Alaska Peninsula): 2 earthquakes up to magnitude 2.1

2 earthquakes occurred near (under) the volcano during 8 minutes, the last being recorded quake 16 hours ago. Hypocenter depths ranged between 4.6 and 0.0 km.
Earthquake details:
2.1 quake 91 Km N of Karluk, Alaska, USA, 23 April 2021 07:40 GMT (3 km S)
0.5 quake 92 Km N of Karluk, Alaska, USA, 23 April 2021 07:48 GMT (4 km WSW)
All earthquakes at Denison

Great Sitkin volcano (Aleutian Islands): 6 earthquakes up to magnitude 2.6

6 earthquakes occurred near (under) the volcano during 1 hour 47 minutes, the last being recorded quake 18 hours ago. Hypocenter depths ranged between 10.2 and 8.7 km.
Earthquake details: (only 5 largest)
2.6 quake 36 Km NE of Adak, Alaska, USA, 23 April 2021 03:50 GMT (4 km WSW)
2.2 quake 32 Km NE of Adak, Alaska, USA, 23 April 2021 03:37 GMT (6 km W)
0.5 quake 34 Km NE of Adak, Alaska, USA, 23 April 2021 04:02 GMT (9 km W)
0.5 quake 34 Km NE of Adak, Alaska, USA, 23 April 2021 03:38 GMT (9 km W)
0.3 quake 35 Km NE of Adak, Alaska, USA, 23 April 2021 05:24 GMT (7 km W)
All earthquakes at Great Sitkin

Kilauea volcano (Hawai'i (Big Island)): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 8 hours ago. The quake, which might be volcanic in origin, was located at a depth of 2.0 km depth at 4 km distance S from the volcano.
Earthquake details:
2.1 quake Island of Hawaii, Hawaii, USA, 23 April 2021 15:55 GMT (4 km S)
All earthquakes at Kilauea

Krísuvík volcano (Reykjanes Peninsula, Iceland): 13 earthquakes up to magnitude 1.4

Possible earthquake swarm: 13 earthquakes occurred near (under) the volcano during 14 hours, the last being recorded quake 9 hours ago. Hypocenter depths ranged between 8.2 and 1.3 km.
Earthquake details: (only 5 largest)
1.4 quake 1.6 Km SSW of Keilir, Iceland, 23 April 2021 01:07 GMT (4 km W)
1.1 quake 1.9 Km SSW of Keilir, Iceland, 23 April 2021 01:15 GMT (4 km W)
1.0 quake 4.3 Km ENE of Keilir, Iceland, 23 April 2021 06:33 GMT (2 km NNE)
0.9 quake 2.9 Km SSW of Keilir, Iceland, 23 April 2021 03:14 GMT (5 km WSW)
0.8 quake 4.2 Km N of Krýsuvík, Iceland, 23 April 2021 10:09 GMT (1 km ESE)
All earthquakes at Krísuvík

Long Valley volcano (California): 4 earthquakes up to magnitude 2.1

4 earthquakes occurred near (under) the volcano during 11 hours, the last being recorded quake 4 hours ago. Hypocenter depths ranged between 9.7 and 4.0 km.
Earthquake details:
2.1 quake 13km W of Toms Place, CA, USA, 23 April 2021 19:30 GMT (15 km SSE)
0.6 quake 12km W of Toms Place, CA, USA, 23 April 2021 20:13 GMT (18 km SSE)
0.5 quake 11km W of Toms Place, CA, USA, 23 April 2021 09:34 GMT (15 km SSE)
0.3 quake 13km W of Toms Place, CA, USA, 23 April 2021 11:05 GMT (17 km SSE)
All earthquakes at Long Valley

Nisyros volcano (Greece): 21 earthquakes up to magnitude 3.6

Possible earthquake swarm: 21 earthquakes occurred near (under) the volcano during 22 hours, the last being recorded quake 1 hour 44 minutes ago. Hypocenter depths ranged between 18.1 and 2.0 km.
Earthquake details: (only 5 largest)
3.6 quake Aegean Sea, 50 km south of Kos Town, Dodecanese, South Aegean, Greece, 23 April 2021 12:19 GMT (16 km S)
3.3 quake Aegean Sea, 53 km south of Kos Town, Dodecanese, South Aegean, Greece, 23 April 2021 04:46 GMT (17 km S)
3.0 quake Aegean Sea, 53 km south of Kos Town, Dodecanese, South Aegean, Greece, 23 April 2021 06:13 GMT (15 km S)
2.9 quake Aegean Sea, 56 km south of Kos Town, Dodecanese, South Aegean, Greece, 23 April 2021 02:44 GMT (14 km S)
2.9 quake Aegean Sea, 46 km south of Kos Town, Dodecanese, South Aegean, Greece, 23 April 2021 15:31 GMT (10 km S)
All earthquakes at Nisyros

Penguin Island volcano (Antarctica): magnitude 4.3 earthquake

A magnitude 4.3 earthquake occurred at the volcano 6 hours ago. The quake, which might be volcanic in origin, was located at a depth of 5.0 km depth at 12 km distance SW from the volcano.
Earthquake details:
4.3 quake South Atlantic Ocean, Antarctica, 23 Apr 3:12 pm (GMT -3) (12 km SW)
All earthquakes at Penguin Island

Sabancaya volcano (Peru): magnitude 3.7 earthquake

A magnitude 3.7 earthquake occurred at the volcano 15 hours ago. The quake, which might be volcanic in origin, was located at a depth of 11.0 km depth at 15 km distance NNW from the volcano.
Earthquake details:
3.7 quake Provincia de Caylloma, 91 km northwest of Arequipa, Peru, 23 April 2021 08:59 GMT (15 km NNW)
All earthquakes at Sabancaya

Previous news

Thu, 22 Apr 2021, 23:50
World map showing volcanoes with shallow (less than 20 km) earthquakes within 20 km radius  during the past 24 hours on 22 Apr 2021 Number in brackets indicate nr of quakes.
Quakes detected near: Akyarlar (1 quake mag 2.8), Ararat (1 quake mag 2.8), Buzzard Creek (1 quake mag 1.4), Clear Lake (34 quakes between mag 0.3-2.5), Coso (5 quakes between mag 0.7-1.2), Eldey (2 quakes between mag 0.8-1.3) ... Read all
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